A joint Honduran-American expedition has confirmed the presence of extensive pre-Columbian ruins in Mosquitia in eastern Honduras, a region rumored to contain ruins of a lost "White City" or "City of the Monkey God."

Cahokia was the largest and most influential city of the mound-building Mississippian culture. Analysis of teeth from 87 ancient Cahokians indicates that massive immigration may have driven the city's explosive growth.

The oldest regenerated plant has beaten the previous recordholder by some 30,000 years, a new study says. The oldest plant ever to be regenerated has beaten the previous recordholder by some 30,000 years, a new study says.

They date back at least to ancient Roman times, but Friday the 13th superstitions won't be getting much of a workout this year. Luckily for triskaidekaphobia sufferers, today is 2011's only Friday the 13th.

Egyptian officials—who earlier reported that no artifacts were stolen from the Egyptian Museum in Cairo during a looting attempt last month—now say several items are missing from the museum, including some depicting King Tut.

Restoration work is under way for antiquities damaged during a looting attempt at Cairo's Egyptian Museum in late January. Museum officials say very little was damaged and that nothing was destroyed or stolen from the museum.

They date back at least to ancient Roman times, but Friday the 13th superstitions won't be getting much of a workout this year. Luckily for triskaidekaphobia sufferers, today is 2010's only Friday the 13th.

A "vampire" unearthed in a mass grave near Venice was unusually old for the Middle Ages, suggesting she may also have been accused of being a witch, according to new research that includes a reconstruction of the medieval woman.

It had a long neck and tail, walked on two feet, and weighed about as much as a German shepherd. But the most unique feature of the newly discovered Masiakasaurus knopfleri is its teeth, some of which protruded from its jaw almost horizontally.

The ancestors of lemurs, fossa, and other Madagascar mammals got to the island aboard natural rafts, according to a new model of the ocean currents and prevailing winds that existed 50 million years ago.

Following in a giant dinosaur's footsteps could be fatal—but not for the reasons you might suspect. A new study suggests that death traps filled with rare raptor fossils may have been created when a behemoth strolled across ashy mud.